Note G - Fair Value Measurements (Details)	9 Months Ended
Jan. 31, 2014
Original [Member] \| Colonial [Member]
Note G - Fair Value Measurements (Details) [Line Items]
Fair Value Inputs, Discount Rate	37.50%
Revised [Member] \| Colonial [Member]
Note G - Fair Value Measurements (Details) [Line Items]
Fair Value Inputs, Discount Rate	38.50%
Minimum [Member]
Note G - Fair Value Measurements (Details) [Line Items]
Fair Value Inputs, Discount Rate	35.00%
Maximum [Member]
Note G - Fair Value Measurements (Details) [Line Items]
Fair Value Inputs, Discount Rate	40.00%

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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